National Geographic programa spalio 1 d.

On the second leg of his journey, wilderness explorer Hazen Audel descends the Valley's western wall in search of a revered herd of elephants.

In this episode we learn how many ways there are to injure and humiliate yourself unicycling off-road, mounting a segway or arm-wrestling.

In this episode we examine go kart cornering, boating and no parachute jumping.

Daniel visits a massive hangar in Silicon Valley, where he'll help prep an astonishing new airship for lift-off.

Alpine Mega Tunnel. On the border of Austria and Italy, Daniel blasts, shores and bores a tunnel through the Alps.

The Channel Tunnel linking Britain with France is one of the seven wonders of the modern world. This is a project that's been blighted by flood, fire, tragic loss of life and financial bust ups.

Clear communication is essential to safe flying. When it doesn't take place, disaster strikes.

Revisit four pivotal aviation disasters and near-misses that have taught the industry on how to get planes in the air safely.

Three real disasters dissected. A bridge collision, a Polish plane, the Bhopal disaster.

Why did Boeing's brand new 737 Max nosedive into the ground, killing 157?

Follow the men and women in charge of stopping drugs and illegal immigration at Colombia's busiest airport.

Documentary series. A man with 5kg of cocaine in his suitcase claims to be the victim of a trick. A couple of young tourists turn out to be carrying cocaine.

A Roman shipwreck preserves a sealed medical chest containing tablets and tinctures that mirror remedies still recognised today.

In England, hundreds of angel coins uncover a royal healing ritual once believed to cure the "king's evil" through the monarch's touch.

Findings include legendary shipwreck, military structures and stone disks.

Southwest 1380 is rocked by a mid-air explosion and a horrifying fatality.

Clear communication is essential to safe flying. When it doesn't take place, disaster strikes.

Revisit four pivotal aviation disasters and near-misses that have taught the industry on how to get planes in the air safely.

100 feet beneath the ground in the newly discovered tomb complex, the team take a risk to search for a hidden burial chamber.

Archaeologists open the tomb's largest stone sarcophagus for the first time since 600 B.C.

Follow the men and women in charge of stopping drugs and illegal immigration at Colombia's busiest airport.

Documentary series. A man with 5kg of cocaine in his suitcase claims to be the victim of a trick. A couple of young tourists turn out to be carrying cocaine.

Enormous ancient terraces made of volcanic rocks in West Java, Indonesia, have origins shrouded in mystery.

Findings include a volcanic island, burials, a computer, orcas vs. sharks.

Made from codeine "cooked" with toxic ingredients, Krokodil can be stronger than heroin, and more addictive.

Join Nat Geo Channel as we go inside one of the largest cocaine markets in the country, Los Angeles.

Southwest 1380 is rocked by a mid-air explosion and a horrifying fatality.

Clear communication is essential to safe flying. When it doesn't take place, disaster strikes.

A Chinese airplane in distress lands at a top-secret US Air Force base.

Revisit four pivotal aviation disasters and near-misses that have taught the industry on how to get planes in the air safely.

Warlords of Ivory. Investigative journalist Bryan Christy explores how the proceeds from ivory poaching are used to fund dangerous terrorist organisations.

Adventurer Steve Elkins searches the rainforests of Honduras on a quest to find the lost ""city of the monkey god"" - he's the latest in a long line of explorers obsessed with finding lost cities in Central and Latin America.

In Peru's Sacred Valley of the Incas, Gordon Ramsay travels by motorbike to discover their traditional cuisine.